11.2 Quiz

Which solute is the most soluble at 10 ⁰C?

• KI

• NH₃

• KClO₃

• NH₄Cl

How many grams of SO₂ can dissolve at 50 ⁰C?

• 5 g

• 10 g

• 20 g

• 39 g

What type of a solution is 60g NaNO₃ at 40ºC?

• Saturated

• Unsaturated

• Supersaturated

• Hyposaturated

If you are trying to dissolve sugar in your Koolaid, which of the following will NOT increase the rate of dissolution?

• use crushed sugar, instead of cubed

• mix the solution

• add more sugar

• heat the solution

What does it mean when we say water is a "polar molecule"?

• The molecule is cold

• The molecule has ionic bonds

• The molecule has covalent bonds between its atoms

• It has partial positive and negative charges at opposite ends.

"Like dissolves like" means....

• substances with opposite polarity are compatible

• substances with similar polarity are insoluble in each other.

• substances with opposite polarity will dissolve in each other.

• substances with similar polarity will dissolve in each other.

Which of the following is NOT true about water?

• water is called a "universal solvent"

• water is polar, and dissolves other polar substances

• water is non-polar, and dissolves other non-polar substances

• water has a partial positive/negative ends

Which of the following best describes the process of dissolving?

• A chemical reaction between solute and solvent

• A physical change where solute particles are surrounded by solvent molecules

• The evaporation of solvent leaving solute particles behind

• Nothing happens and the solute settles to the bottom of the container

What is the main difference between a saturated and a supersaturated solution?

• A saturated solution contains the maximum amount of solute at a given temperature, while a supersaturated solution contains more than the maximum.

• A saturated solution contains more solute than a supersaturated solution at any temperature.

• A supersaturated solution can dissolve more solute, while a saturated solution cannot dissolve any more solute.

• There is no difference; both terms describe the same type of solution.

Which of the following is true for an unsaturated solution?

• It cannot dissolve more solute at the given temperature.

• It contains the maximum amount of solute that can be dissolved at the given temperature.

• It can dissolve more solute at the given temperature.

• It contains more solute than can be dissolved at the given temperature.